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Claude 3.5 Sonnet vs Grok 4.6

Comparing Claude 3.5 Sonnet and Grok 4.6 across benchmarks, pricing, and capabilities.

Anthropic · xAI · Updated for 2026

Which is better?

Claude 3.5 Sonnet and Grok 4.6 trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

On price, Grok 4.6 is roughly 2.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Grok 4.6 also accepts a larger context window (500,000 input tokens), making it the stronger choice for long documents and large codebases.

Based on current benchmark, pricing, and model metadata for 2026.

Choose Claude 3.5 Sonnet

  • you want predictable pricing at $3.00/M input and $15.00/M output

Choose Grok 4.6

  • cost matters — it's about 2.0x cheaper per token
  • you process long inputs — it offers a 500,000 token context window
  • you want the most recent training data — it shipped Aug 2026

At a glance

The differences that matter most.

Claude 3.5 Sonnet
Anthropic
Grok 4.6
xAI
Benchmark wins
—
—
Input price
$3.00 / M
$2.00 / M
Output price
$15.00 / M
$6.00 / M
Context window
200,000
500,000
Released
Oct 2024
Aug 2026
License
Proprietary
Proprietary

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude 3.5 Sonnet and Grok 4.6don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Playground indexes and blind preference scores

Pricing Analysis

Price comparison per million tokens

Grok 4.6 costs less

For input processing, Claude 3.5 Sonnet ($3.00/1M tokens) is 1.5x more expensive than Grok 4.6 ($2.00/1M tokens).

For output processing, Claude 3.5 Sonnet ($15.00/1M tokens) is 2.5x more expensive than Grok 4.6 ($6.00/1M tokens).

In conclusion, Claude 3.5 Sonnet is more expensive than Grok 4.6.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Mon Aug 24 2026 • llm-stats.com
Anthropic
Claude 3.5 Sonnet
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
xAI
Grok 4.6
Input tokens$2.00
Output tokens$6.00
Best providerxAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Grok 4.6 accepts 500,000 input tokens compared to Claude 3.5 Sonnet's 200,000 tokens. Only Claude 3.5 Sonnet specifies output context (200,000 tokens).

Anthropic
Claude 3.5 Sonnet
Input200,000 tokens
Output200,000 tokens
xAI
Grok 4.6
Input500,000 tokens
Output- tokens
Mon Aug 24 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3.5 Sonnet and Grok 4.6 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude 3.5 Sonnet

Text
Images
Audio
Video

Grok 4.6

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude 3.5 Sonnet

Proprietary

Closed source

Grok 4.6

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3.5 Sonnet was released on 2024-10-22, while Grok 4.6 was released on 2026-08-12.

Grok 4.6 is 22 months newer than Claude 3.5 Sonnet.

Claude 3.5 Sonnet

Oct 22, 2024

1.8 years ago

Grok 4.6

Aug 12, 2026

1 weeks ago

1.8yr newer

Knowledge Cutoff

When training data ends

Grok 4.6 has a documented knowledge cutoff of 2026-02-01, while Claude 3.5 Sonnet's cutoff date is not specified.

We can confirm Grok 4.6's training data extends to 2026-02-01, but cannot make a direct comparison without Claude 3.5 Sonnet's cutoff date.

Claude 3.5 Sonnet

—

Grok 4.6

Feb 2026

Provider Availability

Claude 3.5 Sonnet is available from Anthropic, Bedrock, Google. Grok 4.6 is available from xAI.

Claude 3.5 Sonnet

anthropic logo
Anthropic
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
google logo
Google
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Grok 4.6

xai logo
xAI
Input Price:Input: $2.00/1MOutput Price:Output: $6.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude 3.5 Sonnet and Grok 4.6 side-by-side, then vote on the output you prefer.

Claude 3.5 Sonnet
✓ Preferred
Grok 4.6
Open in Playground

FAQ

Common questions about Claude 3.5 Sonnet vs Grok 4.6.

Which is better, Claude 3.5 Sonnet or Grok 4.6?

Claude 3.5 Sonnet (Anthropic) and Grok 4.6 (xAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Claude 3.5 Sonnet compare to Grok 4.6 in benchmarks?

Claude 3.5 Sonnet scores GSM8k: 96.4%, DocVQA: 95.2%, AI2D: 94.7%, HumanEval: 93.7%, BIG-Bench Hard: 93.1%. Grok 4.6 scores CursorBench v3.2: 69.9%, DeepSWE 1.1: 65.9%, FrontierCode: 61.3%, AA-Index: 61.0%, GDPval-AA: 58.4%.

Is Claude 3.5 Sonnet cheaper than Grok 4.6?

Grok 4.6 is 1.5x cheaper for input tokens. Claude 3.5 Sonnet costs $3.00/M input and $15.00/M output via anthropic. Grok 4.6 costs $2.00/M input and $6.00/M output via xai.

What are the context window sizes for Claude 3.5 Sonnet and Grok 4.6?

Claude 3.5 Sonnet supports 200K tokens and Grok 4.6 supports 500K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude 3.5 Sonnet and Grok 4.6?

Key differences include context window (200K vs 500K), input pricing ($3.00 vs $2.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude 3.5 Sonnet and Grok 4.6?

Claude 3.5 Sonnet is developed by Anthropic and Grok 4.6 is developed by xAI.

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